What about manufacturing flaws?

Some collectors are tolerant of minor production flaws, such as firing cracks (distinguished as a ragged edge and a slightly open fissure vs. the tightly closed and straight-line fracture in a damage crack) or a pinprick somewhere on the glaze. But even those not bothered by tiny flaws will be put off in direct proportion to the flaw's visibility. For this reason, we avoid carrying merchandise with obvious flaws.